Franz guilleaume and ewald goltstein



(No Model.) Y A F. GUILLEAUME v'E. GOL-TSTEIN.

JAB LID -FASTENBR- 'N'q.5o1,`41a. Patented Ju1y11,189s'.

.[72 yan/fo UNITED STATES g PATENT' OFFICE.

FRANZ GUILLEAUME Al\TD EWALD GOLTSTEIN, OF BONN, GERMANY.

JAR-LID FASTENER.

SPECIFICATION forming part of Letters Patent No. 501,418, dated July-11, 1893.'

' Application iiled May 21, 1892. Serial No. 433,871. (No model.) Patented inBelginm Api-il 30, 1892, No. 99,246; in France August 1, 1892, No. 220,934; in 'Austria-Hungary August 8l, 1892, No. 19,218 and No. 33,901, and in Germany January .To all whom it may concern:

Be it known that we, FRANZ GUILLEAUME and EWALD GoLTsTEIN, subjects of the King of Prussia, residing at Bonn, in the Kingdom of Prussia, Germany, have invented a new and useful Improvement in Jar-Lid Fasteners, (for which we have obtained Letters Patent in Germany, No. 66,767, dated January 30, 1893; in Belgium, No. 99,246, dated April o 30, 1892; in France, No. 220,934, dated August 1, 1892, and in Austria-Hungary, No. 19,218

and No. 33,901, dated August 31, 1892,) where- .v of the following is a specification.

Our invention relates to the means for se- 5 curing the lids of jars, such as are used for keeping preserves. The device which we employ for this purpose consists in a metallic clamp having the form of a star with three or more radii or arms, which are bent downward o at their ends and then inward again so as to form hooks. Moreover the clamp is made of such resiliency that two of the arms may be spread apart for allowing the clamp to be slipped over the lid of the jar. Preferably 5 the same is constructed of a single wire bent to the required shape. The jars to which these clamps are to be applied, must be prop vided below their rim with a peripheral collar or shoulder with which the said hooks may a engage. After the lid has been placed on the Fi' jar together with an india-rubber` tighteningring, the clamp is sprung over the lid and the top of the jar, so that they hooks catch under the collar or shoulder` of the latter. In order 5 that the clamp may exercise a resilient pressure on the lid, its central portion is bent downward in a curve, or the lid is made convex or` formed in the center with a projection for the clamp to bear on.

In the annexed drawings, Figurel is an elevation of the upper portion of a jar provided Vwith our lid-fastener. Fig. 2 is a vertical section through a portion of the jar and the l-id. Fig. 3 is a top-view corresponding to Fig. 1, and Fig. 4 av view from the right hand side of the jar relatively to Fig. 3. clamp detached from the jar. Fig. 6 represents on a larger scale the joint between the jar and the lid. Fig. 7 is an enlarged view of fthe joint between the jar and lid, showing the washer deformed as hereinafter specified.

Fig. 5 shows the The jar b is molded with the conical riin b', forming at its bottom the shoulder Z22 and provided with a groove in which is placed the india-rubber ring d, serving to producea tight joint between the jar and the lid a. The clamp c c is made of wire bent to form astar with three arms, whereof the arm c consists in a doubled portion of the wire, while the arms c c consist each in a single part. The ends of the arms are bent downward and then inward so as to form hooks adapted to grasp over the lid a and to catch with their tips c2 under the shoulder b2. Toward the middle of the clamp the arms cc are curved downward to press on the lid.

For applying the clamp, the lid is pressed well down upon the jar, so that the hooks on arms c are capable of engaging with the shoulder b2 when the arms bear on the lid. The clamp is then pushed from the side, t'. e., in the direction of arrow ac, over the lid, the arms c bending apart and then springing together again, until arm c touches against the lid, whereupon a pressure in inclined direction puts the hook on arm c also in engagement with the shoulder b2, the lid being then secured through the pressure of the central portion of the clamp. For removing the clamp, it only requires to be drawn off in the opposite direction.

As shown in Fig. 6 of the drawings the rim is conical andprovided with a groove for the reception of the india rubber ring d. The fiange of the lid is fgrmed with an internal corner or shoulder. The internal face of that part of the flange which we term the extension or lower part, extends below the shoulder or corner, is made perfectly smooth so as to permit of free movement over the washer and the pressure of the shoulder at the proper point. When the cover is placed in position the inclined shoulder or corner, pressesagainst the washer at a point slightly to one side of its center and in this way the washer is deformed and caused to extend both upward and downward beyond the groove in which it is placed, thereby closing the space b etween-the jar and cover and forming a tight joint. cover being slightly larger in area than the jar, a space is formed between the two when Vin place which permits of the rubber ring,

The lid or i when deformed, assuming the position above described. In this arrangement, if the filled jar (the jar being closed by lid and the lid held in position by the clamp or other force) is heated the expansion of the contents will create an internal pressure, which without being very great will slightly lift the lid against the pressure of the clamp or other force used, and will allow steam or gases to escape. If now the jar is cooled and the clamp removed there will be a Vacuum in the interior of the jar, and the pressure of the external air will so force down the lid that the washer is totally deformed and forms so tight a joint that the pressure of the air alone is sufficient for securing the lid in place. If now it be desired to remove the lid or cover thus secured in place, it is only necessary to pierce a small hole in the same, so that air may pass into the jar, or again heat the contents of the jar. In this instance if the contents of the jar should become impure or spoiled from fermentation or other causes, an internal pressure is created thereby, which will cause the cover or lid to become loose and easily lifted. Thus the purchaser can thereby at once ascertain whether the contents of the jar are in good condition.

We claim as our inventionl. The combination with a jar having a peripheral shoulder, and a lid to said jar, of a lid-fastener consisting in a resilient clamp constructed of a single wire bent into the shape of a star with a plurality of arms, which at their ends form hooks adapted to grasp over the lid and to engage with said shoulder, while toward the middle of the clamp the arms are formed to press on the lid, substantially as described.

2. The combination of the jar having a conical shaped rim, grooved for the reception v In testimony `whereof we have hereunto set D our handsin the presence of two subscribing witnesses.

FRANZ GUILLEAUME. EWALD GOLTSTEIN. Witnesses:

H. A. MAXWELL, SIBILLA LANG. 

